This is a high-tech engine pushrod by COMP Cams, with a diameter of 3/8”, length of 9.350”, with 5/16” bottom and top 5/16” diameter. It has a black oxide finish chromoly and features a wall thickness of .080”. This pushrod is a genuine COMP Cams product, designed for direct replacement in engines. It is a performance part made in the United States, suitable for car and truck engines.